I like that you are experimenting with your grow and you seem to have thought through the process.
I am not against topping autos at all even though my original post may have made it seem that way. In fact, had I known then what I know now about my current grow, I might have topped my gal. I think topping is a good way to break main cola apical dominance, increase side branching and stunt the height of a plant. However, in my experience, it doesn’t increase yields. And if I were to top a plant, I would probably choose a strain that was: 1.) large in stature; 2.) a vigorous grower: and 3.) more sativa dominant.
As far as being careful with LST goes, when I say the stems on the Strawberry Nuggets are thick, what I mean is that on my little two liter bottle grow with her, her main stem was about an inch and a half (3.8 cm) in diameter and her side branches very early on were about three quarters of an inch (1.9 cm) in diameter. As time goes on, they become very rigid, too. I wouldn’t say that it’s impossible to LST, but I would be very careful and I would probably only pull out the side branches to open up the middle a bit. I just let mine grow naturally, and I found that she kept a fairly even canopy until after the flowering stretch was finished, with the main cola only slightly above the side branches (maybe only an inch or two (2.5 to 5 cm) difference in height). The large fan leaves on her created a very flat looking almost table-like top to her. I had to tuck the fans twice a day to make sure the side branches got enough light. I’m a very big guy. I’m 6’9” (206 cm) tall and I weigh 300+ pounds (135 kg), and the fan leaves on this were bigger than my hands (!!!). I know that
@Vapo69 has had some excellent results with topping and mainlining his Strawberry Nuggets. And he did it very early on. What he did was actually quite masterful.
All in all, I was just trying to make the points of 1.) thinking it all through; and 2.) exercising caution and not being too aggressive with her. That’s all.
Happy growing.